Atlanta Police spokesman James H White III said five men, including the injured Irish man, and one young girl had sought shelter beneath a tree. Lightning struck the tree and all six were injured.

He said they were taken to hospitals for further treatment, all of them alert, conscious and breathing.

Ambulances streamed into the private East Lake Golf Club about six miles east of Atlanta, where 30 players are competing for the FedEx Cup.

The players already had been taken into the clubhouse before lightning hit, and before long East Lake was hit with a ground-shaking clap of thunder.

WATCH...This is why you take thunderstorms seriously!

Scary situation as a t-storm developed near the East Lake Golf Club in Atlanta, GA. Golf players, as well as spectators, were seeking shelter. 4 people were reported being treated due to the lightning strike. #gawx#arwxpic.twitter.com/GQHCx2mqfG